Perspectives
on PV: Penetrating PV Questions from Inspectors 
by John Wiles
Based on this series of articles and presentations that I make to groups of inspectors around the country, I get several calls and e-mails a week and sometimes several calls a day from inspectors looking at PV plans or inspecting PV systems. The questions they pose are always challenging because most of the inspectors have done their homework and found the Code lacking in clear concise language.
California Warms Up... to Cold Cathode
by Ryan Johnson
In September 2005, the California Public Utilities Commission (CPUC) announced "the most ambitious energy and efficiency campaign in the history of the utility industry in the U.S.," when introducing a three-year, $2 billion funding plan for energy efficiency programs.
Specifying Adjustable Frequency Drives for Electromagnetic Compatibility in HVAC Applications
by Peter Walter
In the U.S., there are no codes and standards that specifically and completely cover the electromagnetic compatibility of adjustable frequency drives (AFDs).
A Hazard-Based Approach to Reduce the Risk of Shock
by Thomas Lanzisero
To determine the need for ampacity corrections, temperature differentials need to be added to the outdoor temperature, which reach 90-degrees F or higher in most areas of the USA during the summer months. These corrections should be made to the conductors, but seldom are, according to rules in effect in the National Electrical Code.
New Tax Laws May Aid Your Investment Strategy
by Jesse Abercrombie
New legislation extends the lower tax rates on capital gains and stock dividends, temporarily removes restrictions on transfers from traditional to Roth IRAs, and raises the exemption level on the alternative minimum tax (AMT).
Analysis of Changes, NEC-2008, Part II
by Michael J. Johnston
In the July/August issue, we provided a glimpse of some of the more significant changes proposed and accepted for NEC-2008. This article is a continuation of that review.
New Form of MC Cable Crosses Application Boundaries
by Richard Temblador
MCAP cable and its health-care-facility version, HCF MCAP cable, are likely to be encountered by inspectors in the field. Although the new product resembles ordinary Type MC or AC cable, it differs in several respects that should catch your attention during an inspection. |